background image

1

2

LED CODE  FAULT/EFFECT

REASON

1

Overheated appliance

Water temperature greater than 105 °C

2

Differential check faulty/Flame for 15 seconds

Zero check faulty DHW or CH

3

No gas or lockout flame signal/Lockout after 5 ignition attempts Low gas pressure. No flame signal on ignition, or loss of signal during operation

4

Flue gas sensor

Flue gas temperature greater than 95 °C

5

Defective sensor or thermal fuse

Defective flow, return, DHW or flue sensor or open circuit thermal fuse. 

6

Defective gas valve/Flame continues after demand ends 5 sec flame signal after burner is switched off 

7

Defective fan

Missing or Erroneous RPM signal

A

PCB error  

Internal error

Activate BCC (if fitted)

New BCC (if required)

Safety system failure

Failure of internal self checking system

E

BCC error (if fitted)

Incorrect /missing BCC

O

Water flow failure/Flame for a short period only

Sensor temperature differential incorrect

P

Power supply error

Low mains voltage

DHW cold

Defective DHW thermister or open circuit

(No display) No light indication

Defective power supply

NOTE:

FAULT CODES 1 TO 4 MAY BE RESET BY FOLLOWING THE PROCEDURE IN SECTION 5.5 OF THE

INSTALLATION MANUAL, HOWEVER IF ANY OTHER FAULT CODE IS SHOWING PLEASE CONTACT YOUR INSTALLER OR

HALSTEAD BOILERS SERVICE HELPLINE TEL: 01926 834834

Reviews: